Mercurial > projects > ldc
view tests/mini/assign.d @ 951:e71c61befd6d
Now that we're using LLVM 2.5, we can stop always running the
CFGSimplification pass.
The pass was originally added as a workaround for a LLVM 2.4 bug where debug
info would reference labels that have been optimized away.
author | Christian Kamm <kamm incasoftware de> |
---|---|
date | Thu, 12 Feb 2009 18:39:03 +0100 |
parents | 1bb99290e03a |
children |
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module assign; // this is taken from std.intrinsic from gdc int mybtc(uint *p, uint bitnum) { uint * q = p + (bitnum / (uint.sizeof*8)); uint mask = 1 << (bitnum & ((uint.sizeof*8) - 1)); int result = *q & mask; *q ^= mask; return result ? -1 : 0; } void main() { uint i = 0xFFFF_FFFF; int r = mybtc(&i, 31); assert(r); assert(i == 0x7FFF_FFFF); r = mybtc(&i, 31); assert(!r); assert(i == 0xFFFF_FFFF); }